/* ============================================================
   MSAI Portfolio — shared stylesheet
   Design follows rodolfocapdevilla.com.

   Students: you do NOT need to edit this file. Everything you
   change lives in your own students/<your-name>/index.html.
   If you think something here needs changing, open an issue
   instead of editing it — this file is shared by everyone.
   ============================================================ */

:root{
  --blue:#1E6FE0;         /* nav bar, link text */
  --blue-dark:#1857B4;
  --red:#E23B3B;          /* name badge, quote rule */
  --ink:#111111;
  --ink-soft:#4A4A4A;
  --line:#E4E8EF;
  --bg:#FFFFFF;
  --bg-soft:#F7F9FC;
  --r:10px;
  --font:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,Helvetica,sans-serif;
}

*{box-sizing:border-box}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}

/* ---- top navigation ---- */
.nav{
  background:var(--blue);padding:14px 24px;display:flex;flex-wrap:wrap;
  align-items:center;gap:12px;position:sticky;top:0;z-index:10;
}
.nav .badge{
  background:var(--red);color:#fff;font-weight:800;font-size:18px;
  padding:12px 20px;border-radius:var(--r);
}
.nav .badge:hover{text-decoration:none}
.nav .spacer{flex:1}
.nav a.pill{
  background:#fff;color:var(--blue);font-weight:600;font-size:14px;
  padding:10px 16px;border-radius:var(--r);text-align:center;line-height:1.25;
}
.nav a.pill:hover{background:#EEF4FF;text-decoration:none}

/* ---- page shell ---- */
.wrap{max-width:1200px;margin:0 auto;padding:48px 24px 80px}
.cols{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:start}
@media (max-width:860px){.cols{grid-template-columns:1fr;gap:32px}}

/* ---- left rail ---- */
.photo-card{
  border:1px solid var(--line);border-radius:16px;padding:10px;background:var(--bg-soft);
}
.photo-card img{border-radius:12px;width:100%;aspect-ratio:1/1;object-fit:cover}
.rail-link{
  display:block;border:1px solid var(--line);border-radius:var(--r);
  padding:16px;margin-top:14px;text-align:center;font-weight:600;color:var(--blue);
}
.rail-link:hover{background:#EEF4FF;text-decoration:none}

/* ---- hero ---- */
h1{font-size:44px;line-height:1.1;font-weight:800;margin:0 0 24px;letter-spacing:-.02em}
.quote{
  border-left:4px solid var(--red);padding:4px 0 4px 20px;margin:0 0 40px;
  font-style:italic;font-size:19px;line-height:1.55;color:var(--ink-soft);max-width:70ch;
}
h2{font-size:30px;font-weight:800;margin:56px 0 20px;letter-spacing:-.01em}
h2:first-of-type{margin-top:0}
h3{font-size:17px;font-weight:700;margin:0 0 6px}

/* ---- project cards ---- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:20px}
.card{
  border:1px solid var(--line);border-radius:12px;padding:14px;background:#fff;
  box-shadow:0 1px 2px rgba(16,24,40,.04);
}
.card img{border-radius:8px;aspect-ratio:4/3;object-fit:cover;background:var(--bg-soft);margin-bottom:12px}
.card p{margin:6px 0 0;font-size:14px;line-height:1.5;color:var(--ink-soft)}

/* ---- two-column lists (education / experience) ---- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px}
@media (max-width:700px){.split{grid-template-columns:1fr}}
.chain{list-style:none;padding:0;margin:0}
.chain li{padding:10px 0;border-bottom:1px solid var(--line)}
.chain li:last-child{border-bottom:0}
.chain .where{font-size:14px;color:var(--ink-soft)}

footer{
  margin-top:72px;padding-top:24px;border-top:1px solid var(--line);
  font-size:14px;color:var(--ink-soft);
}

/* ---- front page directory ---- */
.people{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}
.person{
  border:1px solid var(--line);border-radius:12px;padding:16px;text-align:center;
  background:#fff;color:var(--ink);
}
.person:hover{border-color:var(--blue);text-decoration:none}
.person img{border-radius:50%;width:112px;height:112px;object-fit:cover;margin:0 auto 12px}
.person .name{font-weight:700}
.person .line{font-size:13px;color:var(--ink-soft);margin-top:4px}
.lede{font-size:19px;line-height:1.6;color:var(--ink-soft);max-width:70ch;margin:0 0 40px}